November 30, 2020, 05:42:35 PM
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### Topic: % solution problem  (Read 209 times)

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#### eusair

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##### % solution problem
« on: September 17, 2020, 09:49:14 PM »
see attached pics...

the front of the bottle says "0.03% solution"
the back of the bottle say "0.3mg/ml"

it's been over a decade since i took analytical chemistry and i don't do this for a living.  needless to say, i'm a bit rusty.  would someone please help me understand this?  it seems to me that the front and back of the bottle say different things (concentrations).

*how much bimatoprost is in that bottle?

**if i have 1mg of bimatoprost in dry form, how much water do i dissolve it in, if i want to end up with the same concentration of solution as is in that bottle?

many thanks for your assistance!

#### AWK

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##### Re: % solution problem
« Reply #1 on: September 18, 2020, 12:29:51 AM »
These are practically the same concentrations.

Question 2 - read Forum Rules.
AWK

#### jeffmoonchop

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##### Re: % solution problem
« Reply #2 on: September 18, 2020, 03:51:20 PM »
If 100% is 1000mg/ml (1g/ml), and 1% is 10mg/ml, how much is 0.03%?